Ethernet Packet Padding Removal for Air Interface Capacity
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Solution Overview
Problem
Carrier-Sense Multiple Access with Collision Detection (CSMA/CD) limits Ethernet packet size to 64 bytes, requiring padding for smaller industrial application packets, which occupies excessive air interface resources and reduces capacity.
Innovation Solution
Delete padding redundant data from Ethernet packets during transmission to save air interface resources and improve capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If padding redundant data is added to meet minimum Ethernet frame size requirement, then Ethernet protocol compliance is improved, but air interface resource utilization deteriorates
Solution Approach 1:
The patent extracts and removes the padding redundant data from the Ethernet frame before air interface transmission. The network device identifies and deletes the padding bytes that were added to meet minimum frame size requirements, transmitting only the actual payload data over the air interface, thereby eliminating wasted radio resources while maintaining protocol compliance through selective padding removal.
Solution Approach 2:
The patent changes the frame size parameter dynamically by removing padding bytes based on the actual payload length. The network device calculates the required padding amount and removes it before transmission, transforming the fixed minimum 64-byte frame requirement into a variable frame size that matches the actual data being transmitted, thus optimizing air interface resource usage.
2Reliability
If padding redundant data is added to meet minimum Ethernet frame size requirement, then Ethernet protocol compliance is improved, but air interface capacity deteriorates
Solution Approach 1:
The patent extracts and removes the padding redundant data from the Ethernet frame before air interface transmission. The network device identifies and deletes the padding bytes that were added to meet minimum frame size requirements, transmitting only the actual payload data over the air interface, thereby eliminating wasted radio resources while maintaining protocol compliance through selective padding removal.
Solution Approach 2:
The patent changes the frame size parameter dynamically by removing padding bytes based on the actual payload length. The network device calculates the required padding amount and removes it before transmission, transforming the fixed minimum 64-byte frame requirement into a variable frame size that matches the actual data being transmitted, thus optimizing air interface resource usage.
Data Source
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AI summary
Embodiments of this application disclose a data transmission method and a device therefor, applied to a scenario of Ethernet packet transmission. The method in embodiments of this application includes: A first device receives a first packet. Load data in the first packet includes padding redundant data. The first device deletes the padding redundant data. The first device generates a second packet. Load data in the second packet is payload data obtained after the padding redundant data is deleted from the first packet. The first device sends the second packet to a second device. In embodiments of this application, the first device deletes the padding redundant data from the first packet, so that the padding redundant data does not need to be transmitted during air interface transmission, thereby saving air interface resources and improving an air interface capacity.